Reflector



Jan. 20, 1925- 1,523,610

C. D. RYDER REFLECTOR Filed Nov; 17, 1924 2 Sheets-Sheet l C. D. RYDER REFLECTOR Filed Nov; 17, 1924 2 Sheets-Sheet 2 Patented den. 2%, i925.

CHARLES D. RYDER, OF OOVINGT'ON. KENTUCKY. ASSIGNOB TO THE CINCINNATI VICTOR COMPANY, OF CINCINNATI, OHIO, A CORPORATION OF OHIO.

REFLECTOR.

To all whom it may concern.

Be it known that I, CHARLES D. RYDER, a citizen of the United States, and residing at Covington, in the county of Kenton and State of Kentucky, have invented a new and useful Reflector, of which the following specification is a full disclosure.

My invention relates to configurated rcflectors and particularly to contigurated re liectors for automobile headlights.

The object of my invention is to provide a configurated reflector which will cast a beam of light shaped substantially like an isosceles triangle with the base at the bottom and with the greatest concentration of light at or about the apex.

Another object of my invention is to provide a contigura ed reflector which will cast the above specified beam of light, with the varying light intensities gradually merging.

Other objects and further advantages will appear from the description of the drawings forming a partof this application in which:

Figure l is a face view of the reflector.

Figure 2 is a section taken on line 2-2 of Figure 1.

Figiire 3 is a section taken on line 33 of Figure 1.

Figure lis an. enlarged view of a portion of Figure 3.

Since the reflector is particularly adapted for an automobile headlight, it will be best understood if described with reference to its intended preferred use as mounted in service position on an automobile.

I provide a concave reflector 1 preferably parabolic in general outline, having a substantially circular margin 2 and an aperture 3, in this case centrally located, to provide entrance for an electric light bulb, not shown. The upper portion of this reflector which casts the upper portion of the light pattern constitutes light concentrating area. The lower portion of the reflector which casts the lower portion of the light Serial No. 750,227.

the normal curvature in order to provide a series of light diffusing areas.

More specifically the reflector is divided into a series of alternately arranged wedgeshaped divisions 4. having their apices 5 at or about the margin 2 of the reflector.

It may be said that these divisions are generated by elements constantly varying in curvature which start at the bottom of the reflector as straight lines and develop in curvature until they are parabolic at the top of the reflector, the dii'cctrix extending vertically on the concave surface. Thus these zones gradually lose their individuality in the upper portion of the reflector and develop into one general light concentrating area, although theoretically the division lines do not fade out short of the apices at the margin of the reflector. The angle of these wedge-shaped divisions as disclosed is 6, and may be varied without materi ally changing the results, as also may be varied the position of the apices with relation to the margin of the reflector.

By this construction and contouring, there is no sharp line of demarcation between the light concentrating and the light diffusing areas and consequently no sudden contrasts or spottiness in the light pattern. The concentrated light illuminates the road for some distance ahead of the motor car and the diifused light provides suflicient illumination for the ditches.

Having described my invention, I claim:

A concave reflector, comprising a series of alternately arranged wedge-shaped divisions, the contouring of each division being concave in one plane and varying in a plane at right angles thereto from straight line contouring adjacent one margin of the reflector to the normal concave contouring adjacent the other margin of the reflector.

In witness whereof, I hereunto subscribe my name.

CHARLES D. RYDER.- 

